IMO, I believe that the SEC's actions are just normal and only exercising the mandate that was given to them as a government agency, so their actions are justifiable because they are part of the greater centralized government bureaucracy and their job is to implement the laws and guidelines especially if there's an investment and money involved.
And about the question of what the SEC has contributed to the Blockchain industry so far, I think they are making the Blockchain industry a more secure and regulation-abiding space.
Like some people would say that they are doing great works fine about that but what about the new start up tech companies out there? Billing them huge amount to be domicile with the sec is nothing much encouraging. I happened to have a conversation with one of the start up project in Africa which has a lot to showcase to the world and really great product they have to offer but they needed to pay a whooping sum of $1 million to get registered before they try to start up and this has caused the company setback as investors are beginning to get worried and pressuring the board members for a refund. It's quite not fair about the sec dealings.